I have three immediately close neighbours, one neighbour across a small road and another one across a larger road (that's what I mean when mentioning a neighbour 'ten meters away'). The house is small, and yet, I would gladly exchange it for something even smaller, since the current house could be called worn out: cracks in the walls, non-existent insulation, and many other small faults. But I would like a larger backyard. Some place to put sunshade, to grow native plants, to hang birdhouse or two... There are almost no birdhouses around, or I haven't noticed them.
I would like to live inside a hill, like a hobbit. I have already enough mould problems as it is, so it would not be an unexpected downside.
I can walk to a lake about two kilometers away, but there are still too many cars. And two kilometers are hardly coverable with one router, especially when I cannot risk messing around with it - I am not sure whether the hardware belongs to me or to the Internet provider.
Around this place, nearly every house has its own WiFi router - 99% of them are secure, however surprising it may be, given the old news of Google-Street-View-Cars-tapping-into-private-Wi-Fi-because-it-was-non-secure.
So, your interference-free place sounds surreal to me... As in, you are fortunate to live here, and why do you need WiFi anyway?
It's easy, yes. As long as you have clear line of sight. It may involve climbing on the roof to install it, depending on environment.
If you reach 300m before ping fails... doesn't it mean there is no need for more power or better antenna? :-/ confused
Best wishes.